EP0216224B1 - Disposition de circuit pour rendre une installation de puissance indépendante de la fréquence du réseau et pour compenser la dispersion des paramètres lors du découpage - Google Patents
Disposition de circuit pour rendre une installation de puissance indépendante de la fréquence du réseau et pour compenser la dispersion des paramètres lors du découpage Download PDFInfo
- Publication number
- EP0216224B1 EP0216224B1 EP19860112273 EP86112273A EP0216224B1 EP 0216224 B1 EP0216224 B1 EP 0216224B1 EP 19860112273 EP19860112273 EP 19860112273 EP 86112273 A EP86112273 A EP 86112273A EP 0216224 B1 EP0216224 B1 EP 0216224B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit arrangement
- voltage
- input
- activated
- arrangement according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/081—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source
Definitions
- the invention relates to a circuit arrangement for the power frequency-independent power setting and for the compensation of parameter variations in the phase control with an ignition pulse shaping unit, in which an ignition pulse for a phase angle is generated by comparing a control or regulating voltage with a periodic comparison voltage.
- a circuit arrangement is known for example from DE-A 2 850 453. Also from IEEE Transactions on Industrial Electronics and Control Instrumentation, Volume IECI-24, No. 1, Febr. 77, pages 46-49, US, S. Murugesan et. al. Circuits are known which are used to generate sawtooth voltages in phase control systems which reach a defined value at the end of a network period.
- the power setting is not independent of the network frequency.
- the periodic comparison voltage is controlled by current sources controlled by a logic unit in the regulated state in its time profile so that a fixed, predetermined reference voltage potential is reached with each zero crossing of the mains voltage
- the controlled current sources via a digital-analog Converters are controlled by an up-down counter as part of the logic unit, to which signals of different pulse durations derived from the zero crossing of the mains frequency are supplied, by means of which the counting mode of the up-down counter depends on the respective position of the intersection of the periodic comparison voltage is controlled with a reference voltage.
- the circuit arrangement according to the invention has the essential advantage that, for example when operating a consumer on a multi-phase network with, for example, three phases, no selection of circuits which are monolithically integrated is required.
- FIG. 1 shows a capacitance C, one connection of which is connected to the constant supply voltage Us and the other connection of which is connected to the output of the synchronization device Syn, the negative input of the comparator stage K, the output of the controlled current sources In and the ignition pulse shaping unit 1.
- the positive input of the comparator stage K is connected to the reference voltage U Ref , which is at zero voltage potential, and the output of the comparator stage K is fed to an input of the AND gate ANDs and the reset input R 2 of the second bistable multivibrator FF 2 .
- the negating input of the AND gate ANDs is supplied with the second signal U 2 derived from the zero crossing of the mains frequency fo with the pulse duration T 2 , and the output of this AND gate is connected to the set input S 1 of the first bistable multivibrator FF 1 .
- the ignition pulse shaping unit 1 is supplied with the control voltage Ust, which emits the ignition pulse Uz required for a phase gating angle a and a signal Uzi derived therefrom, which feeds the residual input R 1 of the first and the set input S 2 of the second bistable multivibrator FF 1 or FF 2 is supplied.
- the outputs Q 1 and Q 2 of the first and second bistable multivibrators FF 1 and FF 2 are fed to an input of an associated AND gate AND, and AND 2 , the other input of which from the zero crossing of the mains frequency f o derived first signal U 1 is driven with the pulse width T i .
- the output of the first AND gate AND, or the output of the second AND gate AND 2 is fed to the reverse input RE or the forward input VE of the forward-reverse counter VR-Z, the output of which is connected to the digital-to-analog converter D / A is connected, which is the current source len In controls.
- the two signals U 1 and U 2 symmetrical to the zero crossing are formed according to FIGS. 2c and 2b.
- the signal U 2 has the pulse duration T 2 , which is significantly longer than the pulse duration T 1 of the signal U 1 .
- the capacitance C is charged to the level of the constant supply voltage Us at the end of each period T (i.e. at the zero crossing of the mains voltage) and is discharged over the period of the period T by means of the controlled current sources In, as shown in FIG. 2d.
- the voltage Uv of the capacitance C at the comparator stage K is compared with the reference voltage U R ef, and the output of the comparator stage K then assumes a logic high level when the signal Uv has become lower than the reference voltage U R ef.
- the associated low level of the comparator stage K has the following effects:
- the second bistable multivibrator FF 2 is set via the set input S 2 .
- the signal Uzi can have any phase position between 0 and 180 °, with the exception of the area around the zero crossing of the mains frequency f o , which is given by the pulse duration Ti of the signal U 1 .
- the output Q 2 of the second bistable flip-flop FF 2 remains set by the signal U Z1 and at the time of occurrence of the pulse duration T 1 of the signal U 1 the second AND gate AND 2 switches through to the forward input of the up-down counter VR -Z, whose counter reading is increased by one step.
- the digital-to-analog converter converts this counter reading into an analog quantity with which the controlled current sources are controlled in such a way that the discharging process of the capacitance C proceeds faster, that is to say that the time profile of the voltage in FIG. 2d becomes steeper.
- both bistable flip-flops are in the reset state when the pulse duration T1 occurs, so that there is no change in the steepness of the periodic Comparison signal Uv results.
- the function of the performance curve P (a) can be determined by a mathematical function of Art to be discribed.
- a logic part controls the various current sources In as a function of the instantaneous voltage level of the periodic comparison voltage Uv, while the grid frequency independence and parameter compensation are regulated by a superimposition variable which is influenced according to the invention by the digital-analog converter (D / A).
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Power Conversion In General (AREA)
- Inverter Devices (AREA)
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3534066 | 1985-09-25 | ||
DE19853534066 DE3534066A1 (de) | 1985-09-25 | 1985-09-25 | Schaltungsanordnung zur netzfrequenzunabhaengigen leistungsstellung und zur kompensation von parameterstreuungen bei der phasenanschnittsteuerung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0216224A2 EP0216224A2 (fr) | 1987-04-01 |
EP0216224A3 EP0216224A3 (en) | 1987-10-07 |
EP0216224B1 true EP0216224B1 (fr) | 1989-06-07 |
Family
ID=6281821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860112273 Expired EP0216224B1 (fr) | 1985-09-25 | 1986-09-04 | Disposition de circuit pour rendre une installation de puissance indépendante de la fréquence du réseau et pour compenser la dispersion des paramètres lors du découpage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0216224B1 (fr) |
DE (1) | DE3534066A1 (fr) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2637781C2 (de) * | 1976-08-21 | 1982-12-09 | Maschinenfabrik Stahlkontor Weser Lenze Kg, 3251 Aerzen | Schaltungsanordnung zur Erzeugung von Zündimpulsen zur Steuerung eines Stromrichters |
DE2850453C2 (de) * | 1978-11-18 | 1985-01-31 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zur selbsttätigen Anpassung von Zündgeneratoren an eine variable Netzfrequenz |
JPS5586371A (en) * | 1978-12-14 | 1980-06-30 | Naoyuki Murakami | Phase controller |
DE3418939A1 (de) * | 1984-05-22 | 1985-11-28 | Telefunken electronic GmbH, 7100 Heilbronn | Leistungssteuerung fuer elektrische lasten |
-
1985
- 1985-09-25 DE DE19853534066 patent/DE3534066A1/de active Granted
-
1986
- 1986-09-04 EP EP19860112273 patent/EP0216224B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3534066C2 (fr) | 1990-02-15 |
EP0216224A3 (en) | 1987-10-07 |
DE3534066A1 (de) | 1987-04-16 |
EP0216224A2 (fr) | 1987-04-01 |
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